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Fixed in 2021.1.X

Fixed in 2020.2.X



Found in






Issue ID




[WebGL] Memory is not released when on Application Quit



How to reproduce:
1. Open the attached project's "" Scene labeled "SampleScene"
2. Make a WebGL build
3. Host the WebGL build
4. Open the built WebGL Player in a browser
5. In the Player, press the "Quit" button

Expected result: Message is logged in the Developer Console that Player has quit
Actual result: Browser throws a "RuntimeError: memory access out of bounds" error or there's an "ArgumentNullException: Value cannot be null" error in the Developer Console

Reproducible with: 2019.4.17f1, 2020.1.17f1, 2020.2.1f1, 2021.1.0a1
Not reproducible with: 2018.4.30f1, 2021.1.0a2, 2021.1.0b1

  1. Resolution Note (fix version 2021.1):

    Fixed a bug where calling unityInstance.Quit() from JavaScript (and releasing all references to unityInstance) would not let JS VM garbage collect away the Unity game application. Fixed in Unity 2021.1.0a2 and above

Comments (3)

  1. Tom-Mensink

    Feb 15, 2022 11:44

    Same for us. Could you please solve this also in 2020.3 LTS? We cannot upgrade from 2019 to 2020 now, because of this bug.

  2. clogghead

    Feb 15, 2022 08:29

    Same for us!

  3. aaniceto

    Aug 23, 2021 19:39

    I see this bug also in 2020.3 LTS, which seems an important bug from where we stand. It's really important for our project.

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